CN202155573U - Step drill - Google Patents
Step drill Download PDFInfo
- Publication number
- CN202155573U CN202155573U CN2011202724457U CN201120272445U CN202155573U CN 202155573 U CN202155573 U CN 202155573U CN 2011202724457 U CN2011202724457 U CN 2011202724457U CN 201120272445 U CN201120272445 U CN 201120272445U CN 202155573 U CN202155573 U CN 202155573U
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- Prior art keywords
- section
- chip
- step drill
- chip pocket
- blade
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- Expired - Fee Related
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Abstract
The utility model provides a step drill, which can ensure a smooth chip removal during a feeding process and improve process safety and stability. The step drill comprises a handle part and a blade part. The blade part comprises a first section adjacent to the end of the blade part and a second section adjacent to the handle part. The first section is smaller than the second section in terms of diameter. The first and second sections are respectively provided with a parabola-shaped groove along the axial direction, forming a side blade and a chip-hold groove. The side blade of the second section is provided with a second chip-hold groove. At the time of hole processing, the side blade of the first section firstly conducts drilling on a workpiece and conducts chip removal by means of the chip-hold groove of the first section. With the feeding of the step drill, when the side blade of the second section is involved in drilling, chip removal can be conducted by means of the chip-hold groove of the second section and a second chip-hold groove. The increase of the chip-hold groove is beneficial to chip removal. Accordingly, iron filings generated during feeding process can be smoothly discharged, and production efficiency can be improved and process quality can be ensured.
Description
Technical field
The utility model belongs to cutter manufacturing technology field, specially refers to a kind of step drill.
Background technology
Drill bit with an important component part in the cutter, is mainly used in the roughing in hole as machining.Along with the development of mechanical industry, the user is to having proposed requirements at the higher level delivery date of the crudy of product, process reliability, working (machining) efficiency, cutter etc.Traditional step drill is adding man-hour, and along with the increase in aperture, iron filings can increase suddenly; Chip removal has some setbacks, and adds at roughing feed to be prone to man-hour cause the boring inner surface to be scratched by iron filings, even causes the drill bit fracture; Working (machining) efficiency and crudy are caused negative effect, therefore can increase processing cost.
The utility model content
The purpose of the utility model is to propose a kind of step drill, adds at roughing feed to guarantee that chip removal is smooth and easy man-hour, thereby improves process safety and stability.
The step drill of the utility model comprises shank and blade; Said blade comprises near blade end first section with near second section of shank; The diameter of said first section is less than the diameter of second section; Said first section and second section be all along himself being axially arranged with parabola shaped groove forming side edge and chip pocket, and key is to offer second chip pocket on the side edge of said second section.
During machining hole, the side edge of first section at first carries out drilling to workpiece, and utilizes the chip pocket of first section to carry out chip removal; When feeding along with step drill; When the side edge of second section is participated in drilling; Just can utilize the chip pocket of second section and second chip pocket to carry out chip removal simultaneously, increasing of chip pocket more helps chip removal, therefore can discharge roughing feed in time, swimmingly and add the iron filings that produce man-hour; Thereby can enhance productivity, guarantee crudy.
Further, said second chip pocket is opened in the sidepiece of the second section side edge, and a side and the chip pocket of second chip pocket be integrated, with convenient processing and chip removal.
Further; Said second chip pocket is opened in second section side edge sidepiece towards direction of rotation when the step drill feeding, and such second chip pocket has produced the effect of " two seamed edge " on side edge, good guidance quality is arranged; Can obviously improve machining accuracy, improve hole wall quality.
The step drill of the utility model has satisfied the chip removal needs of step drill roughing feed through second chip pocket is set, and has improved production efficiency, has guaranteed crudy.
Description of drawings
Fig. 1 is the structural representation of the step drill of the utility model.
Fig. 2 is the A-A cutaway view among Fig. 1.
Among the figure: 1, shank; 2, blade; 3, first section; 4, second section; 5, the side edge of first section; 6, the chip pocket of first section; 7, the side edge of second section; 6, the chip pocket of second section; 9, second chip pocket.
The specific embodiment
Contrast accompanying drawing below; Through description, the effect of the mutual alignment between the shape of the specific embodiment of the utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are done further to specify to embodiment.
Embodiment 1:
Like Fig. 1, shown in 2, the step drill of present embodiment comprises shank 1 and blade 2, and blade 2 comprises near blade end first section 3 with near the diameter of second section, 4, the first sections 3 of the shank diameter less than second section 4; First section 3 is along himself being axially arranged with parabola shaped groove forming side edge 5 and chip pocket 6, the second sections 4 along himself being axially arranged with parabola shaped groove forming side edge 7 and chip pocket 8, and key is to offer second chip pocket 9 on the side edge 7 of second section.
During machining hole, the side edge 5 of first section at first carries out drilling to workpiece, and utilizes the chip pocket 6 of first section to carry out chip removal; When feeding along with step drill; When the side edge 7 of second section is participated in drilling; Just can utilize the chip pocket 8 and second chip pocket 9 of second section to carry out chip removal simultaneously, increasing of chip pocket more helps chip removal, therefore can discharge roughing feed in time, swimmingly and add the iron filings that produce man-hour; Thereby can enhance productivity, guarantee crudy.
The step drill of present embodiment utilizes numerical control five-axle interlock grinding machine, independently writes knives routine and processes, and its material adopts carbide alloy.
Claims (3)
1. step drill; Comprise shank and blade; Said blade comprises near blade end first section with near second section of shank; The diameter of said first section is less than the diameter of second section, and said first section and second section be all along himself being axially arranged with parabola shaped groove to form side edge and chip pocket, it is characterized in that offering second chip pocket on the side edge of said second section.
2. step drill according to claim 1 it is characterized in that said second chip pocket is opened in the sidepiece of the second section side edge, and a side and the chip pocket of second chip pocket is integrated.
3. step drill according to claim 1 and 2 is characterized in that said second chip pocket is opened in second section side edge sidepiece towards direction of rotation when the step drill feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202724457U CN202155573U (en) | 2011-07-29 | 2011-07-29 | Step drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202724457U CN202155573U (en) | 2011-07-29 | 2011-07-29 | Step drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202155573U true CN202155573U (en) | 2012-03-07 |
Family
ID=45763222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202724457U Expired - Fee Related CN202155573U (en) | 2011-07-29 | 2011-07-29 | Step drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202155573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266970A (en) * | 2011-07-29 | 2011-12-07 | 锑玛(苏州)精密工具有限公司 | Step drill |
| CN103722204A (en) * | 2013-12-05 | 2014-04-16 | 周世军 | Method for producing stepped taper-hole barrel |
-
2011
- 2011-07-29 CN CN2011202724457U patent/CN202155573U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266970A (en) * | 2011-07-29 | 2011-12-07 | 锑玛(苏州)精密工具有限公司 | Step drill |
| CN103722204A (en) * | 2013-12-05 | 2014-04-16 | 周世军 | Method for producing stepped taper-hole barrel |
| CN103722204B (en) * | 2013-12-05 | 2017-05-10 | 舟山市帝旺机电有限公司 | Method for producing stepped taper-hole barrel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Stepped drill sharp spade drill blade Effective date of registration: 20130201 Granted publication date: 20120307 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: D & M (Suzhou) Precision Cutting Tools Co., Ltd. Registration number: 2013320010003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20140729 |
|
| EXPY | Termination of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180408 Granted publication date: 20120307 Pledgee: Bank of Communications Ltd Suzhou branch Pledgor: D & M (Suzhou) Precision Cutting Tools Co., Ltd. Registration number: 2013320010003 |